Best workflow for green screen footage

Sun Mar 05, 2017 1:11 am

I'm trying to figure out what the best way to bring in keyed green screen footage into Octane. I've tried rendering a QT file and separate alpha file. I used the the image file in the Diffuse channel and the alpha in the Opacity channel but i'm getting an outline around the keyed elements.

I've also tried rendering an Animation QT with a straight alpha and it keys fine on a regular C4D material when i apply it to the alpha, just wondering how to make it work in Octane with the same results.

Sun Mar 05, 2017 9:59 am

Sun Mar 05, 2017 10:16 am

Have you ever checked and tested these marked parameters? And searched in manual and forum? At least tested the render outputs in AE or somethings else?

Sun Mar 05, 2017 2:57 pm

I'm not trying to render with an alpha channel. I'm trying to map live action green screen footage on a plane and key it out.

Beppe OctaneRender™ Italia Blue Sky · Mon Mar 06, 2017 4:24 pm

Hi RouseandFable,
have you tried to transform the Qt in a png image sequence?
ciao beppe

Mon Mar 06, 2017 5:20 pm

No i haven't bepeg4d. Do you mean export a png sequence from AE and map that onto a plane on an Octane material? I've been exporting separate image and alpha files from After Effects but when they're being combined in C4D, there is a faint outline which i'm not getting in the compositing program.

Mon Mar 06, 2017 5:30 pm

Octane doesn't have a setting similar to keying in compositing programs.
In fact Octane and C4D are not compositing programs at all.

All you can do is use compositing software (AE, Fusion, any other you like) and use keying to produce black and white map. Where black will refer to your green screen and white to other elements.

After that use this black&white map in opacity channel in your material you assign to a plane with your footage.

Hope you catch it.